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Memory Upgrade Advice

daviden
By daviden
in CPUs, Motherboards, and Memory
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Go to solution Solved by Eigenvektor,

Consumer boards pretty much universally only have dual channel support (this one is no exception), even if they have four slots. You simply get two DIMMs per channel with four sticks.

 

4 sticks is harder for the CPU's memory controller to run, so you might not be able to run the sticks at the same speed as you could with 2x16. If you have 4 single rank sticks, the (small) advantage might be that you get dual rank (not the same as dual channel), which lowers latency. You would get the same advantage with 2x16 dual rank sticks, though most are single rank by now.

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Currently using this board with this memory. I've been thinking I want to fill the other 2 slots with 2 more 8Gb sticks, but I'm not sure if that would work as well as getting two new 16Gb sticks and ditching the 8Gb sticks. I can't tell if this board has quad-channel support, and I'm not sure what kind of impact having 4 sticks will have compared to 2.

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Consumer boards pretty much universally only have dual channel support (this one is no exception), even if they have four slots. You simply get two DIMMs per channel with four sticks.

 

4 sticks is harder for the CPU's memory controller to run, so you might not be able to run the sticks at the same speed as you could with 2x16. If you have 4 single rank sticks, the (small) advantage might be that you get dual rank (not the same as dual channel), which lowers latency. You would get the same advantage with 2x16 dual rank sticks, though most are single rank by now.

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Pretty sure "harder for the CPU controller" to run needs clarification.  Never had an issue running XMP with 4 sticks.  Older AMD may have, but almost all newer CPU's run appropriate RAM without issue.

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